Maybe you are using proxy which is easily available to lots of people.Please use your personal ip address and you sould not see that issue.
I do not use any proxy and VPN why are you thinking that? I use a real internet provider router and device use only me. I do not access (do not share my wi-fi password) any other people. so why this problem?

Read the post above. Check your device for malware and then ask your ISP if it a shared address.